Passed laws don't seem very constraining. Between simple disregard and disregard plus eventual compliance after lengthy court review, there's a lot of time spent under unlawful orders and regulations. There's no personal liability for (most?) of these unlawful actions and Trump doesn't seem to care about continuity of government or having a legacy of doing unlawful things.

Impeachment could be a check on his power, but impeachment is a kangaroo court with a political jury, so he would need to piss off a lot more Republican senators than he has.

A few presidental impeachments over unlawful acts ending in conviction would change future behavior. But it seems unlikely that we'll get there.